// 数据库连接
const mongoose = require('mongoose')
const config = require('./index')
const log4j = require('../utils/log4')
mongoose.connect(config.URL, {
  useNewUrlParser: true,
  useUnifiedTopology: true
})

const db = mongoose.connection
db.on('error', () => {
  log4j.error('---数据库连接失败---')
})
db.on('open', () => {
  log4j.info('---数据库连接成功---')
})
